▷After approx. 8 minutes.▷When the vehicle is locked using the central
locking system.
▷Shortly before the battery is discharged
completely, so that the engine can still be
started.
The radio-ready state remains active if, for ex‐
ample, the ignition is automatically switched off
for the following reasons:
▷Opening or closing the driver's door.▷Unfastening of the driver's safety belt.▷When automatically switching from low
beams to parking lights.
If the engine is switched off and the ignition is
switched on, the system automatically switches
to the radio-ready state if the lights are turned
off or, if correspondingly equipped, the day‐
time running lights are activated.
Starting the engine
Information
DANGER
If the exhaust pipe is blocked or ventila‐
tion is insufficient, harmful exhaust gases can
enter into the vehicle. The exhaust gases con‐
tain carbon monoxide, an odorless and color‐
less but highly toxic gas. In enclosed areas, ex‐
haust gases can also accumulate outside of the
vehicle. There is danger to life. Keep the ex‐
haust pipe free and ensure sufficient ventila‐
tion.◀
WARNING
An unsecured vehicle can put itself into
motion and roll away. There is risk of an acci‐
dent. Before exiting, secure the vehicle against
rolling.
In order to ensure that the vehicle is secured
against rolling away, observe the following:
▷Set the parking brake.▷On uphill grades or on a slope, turn the
front wheels in the direction of the curb.
▷On uphill grades or on a slope, also secure
the vehicle, for example with a wheel
chock.◀
CAUTION
In the case of repeated starting attempts
or repeated starting in quick succession, the
fuel is not burned or is inadequately burned.
The catalytic converter can overheat. There is
risk of property damage. Avoid repeated start‐
ing in quick succession.◀
Steptronic transmission
Starting the engine
1.Depress the brake pedal.2.Engage selector lever position P or N.3.Press the Start/Stop button.
The ignition is activated automatically for a cer‐
tain time and is stopped as soon as the engine
starts.
Manual transmission
Starting the engine
1.Depress the brake pedal.2.Press on the clutch pedal and shift to neu‐
tral.
3.Press the Start/Stop button.
The ignition is activated automatically for a cer‐
tain time and is stopped as soon as the engine
starts.
Engine stop
Information
WARNING
Unattended children or animals can move
the vehicle and endanger themselves and traf‐
fic, for example with the following actions:
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▷Pressing the Start/Stop button.▷Releasing the parking brake.▷Opening and closing of doors or windows.▷Engaging selector lever position N.▷Using vehicle equipment.
There is risk of accidents or injuries. Do not
leave children or animals unattended in the ve‐
hicle. Carry remote control along when exiting
and lock the vehicle.◀
WARNING
An unsecured vehicle can put itself into
motion and roll away. There is risk of an acci‐
dent. Before exiting, secure the vehicle against
rolling.
In order to ensure that the vehicle is secured
against rolling away, observe the following:
▷Set the parking brake.▷On uphill grades or on a slope, turn the
front wheels in the direction of the curb.
▷On uphill grades or on a slope, also secure
the vehicle, for example with a wheel
chock.◀
Before driving into a car wash
So that the vehicle can roll into a car wash ob‐
serve instructions for going into an automatic
car wash, refer to page 221.
Steptronic transmission
Switching off the engine
1.Engage selector lever position P with the
vehicle stopped.
2.Press the Start/Stop button.
The engine is switched off.
The radio-ready state is switched on.
3.Set the parking brake.Manual transmission
Switching off the engine
1.With the vehicle at a standstill, press the
Start/Stop button.
The engine is switched off.
The radio-ready state is switched on.
2.Shift into first gear or reverse.3.Set the parking brake.
Auto Start/Stop function
The concept
The Auto Start/Stop function helps save fuel.
The system switches off the engine during a
stop, for example, in traffic congestion or at
traffic lights. The ignition remains switched on.
The engine starts again automatically for driv‐
ing off.
Information
After every start of the engine using the Start/
Stop button, the Auto Start/Stop function is in
the last selected state, refer to page 68. When
the Auto Start/Stop function is active, it is avail‐
able when the vehicle is traveling faster than
about 3 mph, approx. 5 km/h.
Depending on the selected driving mode, refer
to page 119, the system is automatically acti‐
vated or deactivated.
Engine stop
The engine is switched off automatically during
a stop under the following conditions:
Manual transmission:
▷Neutral is engaged and the clutch pedal is
not pressed.
▷The driver's safety belt is buckled or the
driver's door is closed.
Steptronic transmission:
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▷The selector lever is in selector lever posi‐
tion D.
▷Brake pedal remains depressed while the
vehicle is stopped.
▷The driver's safety belt is buckled or the
driver's door is closed.
In order to be able to release the brake pedal,
engage lever in position P. The engine remains
off.
To continue driving depress the brake pedal.
When a gear is engaged, the engine starts au‐
tomatically.
The air flow from the air conditioner is reduced
when the engine is switched off.
Displays in the instrument cluster
The display indicates that the
Auto Start/Stop function is ready
for an Automatic engine start.
The display indicates that the
conditions for an automatic en‐
gine stop have not been met.
Functional limitations
The engine is not switched off automatically in
the following situations:
▷External temperature too low.▷The external temperature is high and auto‐
matic climate control is running.
▷The car's interior has not yet been heated
or cooled to the required level.
▷The engine is not yet at operating tempera‐
ture.
▷The wheels are at a sharp angle or the
steering wheel is being turned.
▷After driving in reverse.▷Fogging of the windows when the auto‐
matic climate control is switched on.
▷The vehicle battery charge is very low.▷At higher elevations.▷The engine compartment lid is unlocked.▷The parking assistant is activated.▷Stop-and-go traffic.▷Selector lever in selector lever position R, N
or M/S.
Starting the engine
The engine starts automatically under the fol‐
lowing conditions:
▷Manual transmission:
The clutch pedal is pressed.
▷Steptronic transmission:
By releasing the brake pedal.
After the engine starts, accelerate as usual.
Safety mode
After the engine switches off automatically, it
will not start again automatically if any one of
the following conditions are met:
▷The driver's safety belt is unbuckled and
the driver's door is open.
▷The hood was unlocked.
Some indicator lights light up for a varied
length of time.
The engine can only be started via the Start/
Stop button.
Functional limitations
Even if driving off was not intended, the deacti‐
vated engine starts up automatically in the fol‐
lowing situations:
▷Excessive warming of the car's interior
when the cooling function is switched on.
▷The steering wheel is turned.▷Steptronic transmission: change from selec‐
tor lever position D to R, N or M/S.
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▷Steptronic transmission: change from selec‐
tor lever position P to R, N, D or M/S.
▷The vehicle begins rolling.▷Fogging of the windows when the auto‐
matic climate control is switched on.
▷The vehicle battery charge is very low.▷Excessive cooling of the car's interior when
the heating is switched on.
▷Manual transmission: low brake vacuum
pressure; this can occur, for example, if the
brake pedal is depressed a number of times
in succession.
Switching the system on/off
Using the button
Press button.
▷LED comes on: Auto Start/Stop function is
deactivated.
The engine is started during an automatic
engine stop.
The engine can only be stopped or started
via the Start/Stop button.
▷LED goes out: Auto Start/Stop function is
activated.
Switching off the vehicle during an
automatic engine stop
During an automatic engine stop, the vehicle
can be switched off permanently, e. g., when
leaving it.
Steptronic transmission:1.Engage selector lever position P.2.Press the Start/Stop button. The ignition is
switched off. The Auto Start/Stop function is
deactivated.
3.Set the parking brake.
Manual transmission:
1.Press the Start/Stop button. The ignition is
switched off. The Auto Start/Stop function is
deactivated.
2.Shift into first gear or reverse.3.Set the parking brake.
Engine start as usual via Start/Stop button.
Automatic deactivation
In certain situations, the Auto Start/Stop func‐
tion is deactivated automatically for safety rea‐
sons, as it is detected that no driver is present.
Malfunction
The Auto Start/Stop function no longer switches
off the engine automatically. A Check Control
message is displayed. It is possible to continue
driving. Have the system checked by a dealer’s
service center or another qualified service cen‐
ter or repair shop.
Parking brake
The concept
The parking brake is used to prevent the vehi‐
cle from rolling when it is parked.
Information
WARNING
An unsecured vehicle can put itself into
motion and roll away. There is risk of an acci‐
dent. Before exiting, secure the vehicle against
rolling.
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In order to ensure that the vehicle is secured
against rolling away, observe the following:
▷Set the parking brake.▷On uphill grades or on a slope, turn the
front wheels in the direction of the curb.
▷On uphill grades or on a slope, also secure
the vehicle, for example with a wheel
chock.◀
WARNING
Unattended children or animals can move
the vehicle and endanger themselves and traf‐
fic, for example with the following actions:
▷Pressing the Start/Stop button.▷Releasing the parking brake.▷Opening and closing of doors or windows.▷Engaging selector lever position N.▷Using vehicle equipment.
There is risk of accidents or injuries. Do not
leave children or animals unattended in the ve‐
hicle. Carry remote control along when exiting
and lock the vehicle.◀
Overview
Parking brake
Setting
Pull the switch.
The LED lights up.
The indicator lamp lights up red. The
parking brake is set.
Depending on the stopping situation, the park‐
ing brake is engaged automatically.
Steptronic transmission: In some parking situa‐
tions, the parking brake is automatically en‐
gaged, when selector lever position P is en‐
gaged. In these cases, the parking brake is
released automatically when you leave the se‐
lector lever position P.
While driving
Use as emergency brake while driving:
Pull the switch and hold it. The vehicle brakes
hard while the switch is being pulled.
The indicator lamp lights up red, a sig‐
nal sounds and the brake lights light up.
A Check Control message is displayed.
If the vehicle is slowed down to a speed of ap‐
prox. 2 mph/3 km/h the parking brake is set.
Releasing
WARNING
Unattended children or animals can move
the vehicle and endanger themselves and traf‐
fic, for example with the following actions:
▷Pressing the Start/Stop button.▷Releasing the parking brake.▷Opening and closing of doors or windows.▷Engaging selector lever position N.▷Using vehicle equipment.
There is risk of accidents or injuries. Do not
leave children or animals unattended in the ve‐
hicle. Carry remote control along when exiting
and lock the vehicle.◀
With the ignition switched on:
Manual transmission: Press the switch
while the brake pedal is pressed.
Steptronic transmission: Press the switch while
the brake is pressed or selector lever position P
is set.
The LED and indicator lamp go out.
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When destination guidance is activated in
the navigation system.
▷Speed limit detection.▷Speed.
Selecting information
You can select what information from the on‐
board computer is to be displayed on the CID
(central information display) of the instrument
cluster.
On the Control Display:
1. "Settings"2."Instrument cluster"3.Select the desired information.
Settings are stored for the profile currently
used.
Information in detail
Range
Displays the estimated cruising range available
with the remaining fuel.
It is calculated based on your driving style over
the last 20 miles/30 km.
GREEN info
Description of GREEN info, refer to page 171.
Average fuel consumption
This is calculated for the period while the en‐
gine is running.
The average fuel consumption is calculated for
the distance traveled since the last reset by the
onboard computer.
Average speed
Periods in which the vehicle is parked with the
engine manually stopped are not included in
the calculation of the average speed.
Resetting average values
Press and hold button on turn signal lever.
Engine temperature display
Displays the current engine temperature, based
on a combination of coolant and motor oil tem‐
perature. As soon as the optimum operating
temperature has been attained, the indicator is
in the center position.
If the engine oil or coolant, thus the engine, be‐
come too hot, a Check Control message is dis‐
played.
Check the coolant level, refer to page 199.
With equipment version with Head-up
Display and navigation: distance to
destination
The distance remaining to the destination is
displayed if a destination is entered in the navi‐
gation system before the trip is started.
The distance to the destination is adopted au‐
tomatically.
With equipment version with Head-up
Display and navigation: time of arrival
The estimated time of arrival is displayed if a
destination is entered in the navigation system
before the trip is started.
The time must be correctly set.
Speed limit detection
Speed limit detection is preset. Description of
the speed limit detection, refer to page 86,
function.
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A vehicle with an average load has a possible
driving range of approx. 50 miles/80 km.
A vehicle with a damaged tire reacts differently,
e.g., it has reduced lane stability during brak‐
ing, a longer braking distance and different
self-steering properties. Adjust your driving
style accordingly. Avoid abrupt steering ma‐
neuvers or driving over obstacles, e.g., curbs,
potholes, etc.
Because the possible driving distance depends
on how the vehicle is used during the trip, the
actual distance may be shorter or longer de‐
pending on the driving speed, road conditions,
external temperature, cargo load, etc.
WARNING
Your vehicle handles differently when a
run-flat tire is damaged and has low or missing
tire inflation pressure, for example, your lane
stability is reduced when braking, braking dis‐
tances are longer and the self-steering proper‐
ties will change. There is risk of an accident.
Drive moderately and do not exceed a speed of
50 mph/80 km/h.◀
Final tire failure
Vibrations or loud noises while driving can indi‐
cate the final failure of a tire.
Reduce speed and stop; otherwise, pieces of
the tire could come loose and cause an acci‐
dent.
Do not continue driving. Contact a dealer’s
service center or another qualified service cen‐
ter or repair shop.
Intelligent Safety
The concept
Intelligent Safety enables central operation of
the driver assistance system.
The intelligent safety systems can hel prevent
an imminent collision.
▷Front-end collision warning with City Brak‐
ing function, refer to page 111.
▷Person warning with City light braking func‐
tion, refer to page 114.
Information
WARNING
Indicators and warnings do not relieve
from the personal responsibility. Due to system
limits, warnings or reactions of the system may
not be output or they may be output too late or
incorrectly. There is risk of an accident. Adjust
the driving style to the traffic conditions. Watch
traffic closely and actively interfere in the re‐
spective situations.◀
WARNING
Due to system limits, individual functions
can malfunction during tow-starting/towing
with the Intelligent Safety systems activated,
for example approach control warning with
light braking function. There is risk of an acci‐
dent. Switch all Intelligent Safety systems off
prior to tow-starting/towing.◀
Overview
Button in the vehicle
Intelligent Safety button
Switching on/off
Some Intelligent Safety systems are automati‐
cally active after every departure. Some Intelli‐
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SymbolMeasureSymbol lights up red: prewarning.
Brake and increase distance.
Symbol flashes red and an acoustic
signal sounds: acute warning.
You are requested to intervene by
braking or make an evasive maneu‐
ver.
Prewarning
This warning is issued, for example, when there
is the impending danger of a collision or the
distance to the vehicle ahead is too small.
The driver must intervene actively when there
is a prewarning.
Acute warning with braking function
Acute warning in displayed in case of the immi‐
nent danger of a collision when the vehicle ap‐
proaches another object at a high differential
speed.
The driver must intervene actively when there
is an acute warning. If necessary, the driver is
assisted by a minor automatic braking inter‐
vention in a possible risk of collision.
Acute warnings can also be triggered without
previous forewarning.
Braking intervention
The warning prompts the driver himself/herself
to react. During a warning, the maximum brak‐
ing force is used. Premise for the brake booster
is sufficiently quick and sufficiently hard step‐
ping on the brake pedal. The system can assist
with some braking intervention if there is risk of
a collision. At low speeds vehicles may thus
come to a complete stop.
Manual transmission: During a braking inter‐
vention up to a complete stop, the engine may
be shut down.
The braking intervention is executed only if DSC
Dynamic Stability Control is switched on.
The braking intervention can be interrupted by
stepping on the accelerator pedal or by actively
moving the steering wheel.
Object detection can be restricted. Limitations
of the detection range and functional restric‐
tions are to be considered.
System limits
Information
WARNING
The system can react incorrectly or not at
all due to the system limits. There is risk of acci‐
dents or risk of property damage. Observe the
system limits and actively interfere if needed.◀
Detection range
The system's detection potential is limited.
Thus a system reaction might not come or
might come late.
E. g. the following situations may not be de‐
tected:
▷Slow moving vehicles when you approach
them at high speed.
▷Vehicles that suddenly swerve in front of
you, or sharply decelerating vehicles.
▷Vehicles with an unusual rear appearance.▷Two-wheeled vehicles ahead of you.
Functional limitations
The system may not be fully functional in the
following situations:
▷In heavy fog, rain, sprayed water or snow‐
fall.
▷In tight curves.▷If the field of view of the camera or the
front windshield are dirty or covered.
▷If the driving stability control systems are
deactivated, for example DSC OFF.
▷Up to 10 seconds after the start of the en‐
gine, via the Start/Stop button.
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